/-app
/-files ...
FileTree.ts
SyncStorageAccess.ts
/-imports
/-storage
/-typings
functions.ts
index.html
try.js 
xxxxxxxxxx
    fullPath: string,
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  }
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​
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  interface Entry {
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    li: HTMLLIElement;
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    name: string;
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    fullPath: string;
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​
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    children: Entry[];
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  }
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​
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  function findEntry(
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    fullPath: string,
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    path: string,
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    entries: Entry[],
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    createIfAbsent: boolean): Entry {
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    var name: string, restPath: string;
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​
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    var slashPos = path.indexOf('/');
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    while (!slashPos) { // slight normalization, keep it for the sake of root paths
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      path = path.slice(1);
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      slashPos = path.indexOf('/');
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    }
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    if (slashPos < 0) {
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      name = path;
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      restPath = null;
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    }
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    else {
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      name = path.slice(0, slashPos);
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      restPath = path.slice(slashPos + 1);
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    }
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    var seekResult = _seekEntryNonRecursive(name, entries);
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    var nextEntry: Entry;
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    if (seekResult.insert) {
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      if (!createIfAbsent) return null;
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      nextEntry = _createNewEntry(fullPath, name);
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      entries.splice(seekResult.index, 0, nextEntry);
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    }
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    else {
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      nextEntry = entries[<any>seekResult];
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    }
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    if (restPath)
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      return findEntry(fullPath, restPath, nextEntry.children, createIfAbsent);
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    else
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      return nextEntry;
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​
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  }
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​
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  function _createNewEntry(fullPath: string, name: string): Entry {
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    var li = document.createElement('li');
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    li.textContent = name; // fullPath ?
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    // TODO: create LI, add to parent, create Entry and return
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  }
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​
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  /** Returns either number (succeess) or complex obj (failure) */
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  function _seekEntryNonRecursive(
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    name: string,
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    entries: Entry[]): { insert: boolean; index: number } {
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    if (entries.length==0)
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      return null;
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    if (entries[0].name > name)
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      return { insert: true, index: 0 };
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    if (entries[0].name === name)
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      return <any>0;
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    var lowIndex = 0;
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89:25 function (fullPath: string, name: string) => Entry